Method for obtaining an ammonium carbamate solution from a...

Details Method for obtaining an ammonium carbamate solution from a... Method for obtaining an ammonium carbamate solution from a...

2005-07-05

2005-07-05

Zucker, Paul A. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C562S555000

Reexamination Certificate

active

06914157

ABSTRACT:
The invention relates to a method for obtaining an ammonium carbamate solution from a gas mixture that contains more than 40 wt. % NH3, less than 50 wt. % CO2and less than 40 wt. % H2O and has a pressure between 0.1 MPa and 4 MPa, comprising a compression step, in which the pressure of the gas mixture is increased to a pressure between 0.5 MPa and 25 MPa, and an absorption step.

REFERENCES:
patent: 3120563 (1964-02-01), Mathieu
patent: 3301897 (1967-01-01), Cook
patent: 3310558 (1967-03-01), Oele
patent: 3503970 (1970-03-01), Kazumichi et al.
patent: 3708536 (1973-01-01), Hillenbrand
patent: 4408046 (1983-10-01), Van Hardeveld
patent: 62 559 (1966-11-01), None
patent: 1129787 (1968-10-01), None

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